ZSFM deluge alarm valve diaphragm 
 / Fire Valve 

 First, characteristics and application form 
 ZSFM deluge valve is a diaphragm-type signal butterfly valve, check valve, manual quick-open valve, solenoid valve. Pressure gauge. Alarm alarm valve test tube, filter, pressure switch, water alarm, release valve, anti-reset locking devices and other components, and the water supply network of fire detectors, fire alarms and sprinkler systems are composed of the following. 
 Deluge sprinkler system with a job. Its characteristics are found after the fire, you can instantly as profuse as the rain water covering the entire protected area or isolation, it is a serious risk for fires, photo storage and processing of flammable materials buildings and sites. 
 Water curtain sprinkler water curtain system configuration, which is characterized by a certain density of water can spray water curtain, to prevent the fire to the extension, the role of fire separation, in large factories, warehouses, shopping malls, exhibition halls and other buildings do fire separation. 
 Mist spray nozzle system with work is characterized by a certain water pressure to spray water into a mist, to achieve cooling, suffocation and other fire-fighting purposes, can be used to extinguish the fire fighting equipment and electrical and water from the chemical reaction of solid and high flash point 6 to flammable liquids in fire. 
 If the installation of closed sprinklers, then become a pre-action system, fire, fire detectors and fire repay by the device to open the deluge valve diaphragm. The system to wet systems. Then the action sprinkler nozzle temperature, mainly for fear of water damage, easily frozen places. 
 Second, the principle 
 Deluge valve diaphragm valve used as the control valve signal to ensure the system more secure, it is the use of diaphragm movement to achieve open and close the valve, the pressure from the diaphragm into the valve chamber and working chamber. Because the upper and lower areas by the difference in the role of water to achieve the seal. When a fire occurs, fire detectors send a signal through the fire alarm (or fire control center), automatically opening deluge valve diaphragm on the valve (which can also manually open the quick-opening valve), the pressure chamber of the rapid discharge of water , acting on the pressure relief valve after the water quickly push up the lower part of the valve into the sprinkler system piping. Also reported pain to the water pipe network, so that water issuing reports and other bells sound bitter, open the pressure switch, a signal to the duty room, or start the fire pump water. 
 Deluge valve diaphragm with anti-reset device, which has applied for national patent. Its structure and principle, then the valve cover fitted with anti-reset the body, lock blocks, etc., connected with the valve cylinder is connected to the valve, the valve with the valve open up cylinder is also increased along with an increase in the push lock , rose to head the Department of the locked lock stop. Prevent the valve back to position. After the fire, close the manual quick opening valve or solenoid valve, the hand wheel rotated 90 ° to the reset position, the lock cylinder from the block so that the diaphragm can automatically reset the deluge valve, deluge valve closes, and then reverse the handwheel 90 ° clockwise to lock position, the system should be back to wait state. 



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